Some sort of 2D vector math support would be useful: wade.addVectors ( a, b ) would return {x: a.x+b.x, y:a.y+b.y}, then wade.multiplyVectors( a, b ), wade.subtractVectors( a, b ), etc.

I know a loading bar has been mentioned already (in another thread), but I'll mention it again just to be sure. If you can make it fully customizable then that's even better!